Get down on all fours with your man kneeling behind you and have him plunge inside you, grabbing your rear for balance. A little firm, well-placed stroking of your G-spot can open up a whole new orgasmic world. If he's the exploring kind, encourage him to thrust far enough inside you so that his testicles
hit your body.
Once you have a G-spot orgasm, you'll crave more. Also, there's something very primal about doing the deed from behind that brings out the animal in even the most mild-mannered guy